[2e5ad9f] | 1 | #include <fstream> |
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| 2 | #include <kernel> |
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| 3 | #include <monitor> |
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[4845ae2] | 4 | #include <stdlib> |
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[2e5ad9f] | 5 | #include <thread> |
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| 6 | |
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| 7 | monitor global_t {}; |
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| 8 | |
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| 9 | global_t globalA; |
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| 10 | global_t globalB; |
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| 11 | global_t globalC; |
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| 12 | |
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| 13 | condition condAB, condAC, condBC, condABC; |
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| 14 | |
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[4845ae2] | 15 | thread Signaler { |
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| 16 | int signals[4]; |
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| 17 | }; |
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| 18 | |
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| 19 | void ?{}( Signaler * this ){ |
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| 20 | this->signals[0] = 0; |
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| 21 | this->signals[1] = 0; |
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| 22 | this->signals[2] = 0; |
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| 23 | this->signals[3] = 0; |
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| 24 | } |
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| 25 | |
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[2e5ad9f] | 26 | thread WaiterAB {}; |
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| 27 | thread WaiterAC {}; |
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| 28 | thread WaiterBC {}; |
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| 29 | thread WaiterABC{}; |
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| 30 | |
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[4845ae2] | 31 | volatile bool done; |
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[2e5ad9f] | 32 | |
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| 33 | //---------------------------------------------------------------------------------------------------- |
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| 34 | // Tools |
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| 35 | void signal( condition * cond, global_t * mutex a, global_t * mutex b ) { |
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| 36 | signal( cond ); |
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| 37 | } |
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| 38 | |
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| 39 | void signal( condition * cond, global_t * mutex a, global_t * mutex b, global_t * mutex c ) { |
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| 40 | signal( cond ); |
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| 41 | } |
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| 42 | |
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| 43 | void wait( condition * cond, global_t * mutex a, global_t * mutex b ) { |
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| 44 | wait( cond ); |
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| 45 | } |
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| 46 | |
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| 47 | void wait( condition * cond, global_t * mutex a, global_t * mutex b, global_t * mutex c ) { |
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| 48 | wait( cond ); |
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| 49 | } |
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| 50 | |
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| 51 | //---------------------------------------------------------------------------------------------------- |
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| 52 | // Signaler |
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| 53 | void main( Signaler* this ) { |
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[4845ae2] | 54 | |
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| 55 | while( true ) { |
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| 56 | int action = (unsigned)rand48() % 4; |
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| 57 | bool finished = true; |
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| 58 | |
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| 59 | for(int i = 0; i < 4; i++) { |
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| 60 | if( this->signals[action] < 10_000 ) { |
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| 61 | finished = false; |
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| 62 | break; |
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| 63 | } |
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| 64 | else { |
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| 65 | action = (action + 1) % 4; |
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| 66 | } |
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| 67 | } |
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| 68 | |
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| 69 | this->signals[action]++; |
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| 70 | if( finished ) break; |
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| 71 | |
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| 72 | //sout | action | this->signals[0] | this->signals[1] | this->signals[2] | this->signals[3] | endl; |
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| 73 | |
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| 74 | switch( action ) { |
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| 75 | case 0: |
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| 76 | signal( &condABC, &globalA, &globalB, &globalC ); |
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| 77 | break; |
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| 78 | case 1: |
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| 79 | signal( &condAB , &globalA, &globalB ); |
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| 80 | break; |
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| 81 | case 2: |
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| 82 | signal( &condBC , &globalB, &globalC ); |
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| 83 | break; |
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| 84 | case 3: |
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| 85 | signal( &condAC , &globalA, &globalC ); |
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| 86 | break; |
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| 87 | default: |
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| 88 | sout | "Something went wrong" | endl; |
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| 89 | abort(); |
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| 90 | } |
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| 91 | } |
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[2e5ad9f] | 92 | } |
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| 93 | |
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| 94 | //---------------------------------------------------------------------------------------------------- |
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| 95 | // Waiter ABC |
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| 96 | void main( WaiterABC* this ) { |
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[4845ae2] | 97 | while( !done ) { |
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| 98 | wait( &condABC, &globalA, &globalB, &globalC ); |
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| 99 | } |
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[2e5ad9f] | 100 | } |
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| 101 | |
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| 102 | //---------------------------------------------------------------------------------------------------- |
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| 103 | // Waiter AB |
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| 104 | void main( WaiterAB* this ) { |
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[4845ae2] | 105 | while( !done ) { |
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| 106 | wait( &condAB , &globalA, &globalB ); |
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| 107 | } |
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[2e5ad9f] | 108 | } |
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| 109 | |
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| 110 | //---------------------------------------------------------------------------------------------------- |
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| 111 | // Waiter AC |
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| 112 | void main( WaiterAC* this ) { |
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[4845ae2] | 113 | while( !done ) { |
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| 114 | wait( &condAC , &globalA, &globalC ); |
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| 115 | } |
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[2e5ad9f] | 116 | } |
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| 117 | |
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| 118 | //---------------------------------------------------------------------------------------------------- |
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| 119 | // Waiter BC |
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| 120 | void main( WaiterBC* this ) { |
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[4845ae2] | 121 | while( !done ) { |
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| 122 | wait( &condBC , &globalB, &globalC ); |
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| 123 | } |
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[2e5ad9f] | 124 | } |
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| 125 | |
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| 126 | //---------------------------------------------------------------------------------------------------- |
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| 127 | // Main |
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| 128 | int main(int argc, char* argv[]) { |
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[4845ae2] | 129 | done = false; |
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[2e5ad9f] | 130 | processor p; |
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| 131 | { |
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| 132 | WaiterABC a; |
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| 133 | WaiterAB b; |
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| 134 | WaiterBC c; |
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| 135 | WaiterAC d; |
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[4845ae2] | 136 | { |
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| 137 | Signaler e; |
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| 138 | } |
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| 139 | done = true; |
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| 140 | signal( &condABC, &globalA, &globalB, &globalC ); |
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| 141 | signal( &condAB , &globalA, &globalB ); |
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| 142 | signal( &condBC , &globalB, &globalC ); |
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| 143 | signal( &condAC , &globalA, &globalC ); |
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[2e5ad9f] | 144 | } |
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| 145 | } |
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